double PLL双锁相环
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double-precision working双(倍)精度工作
double-jointed compasses双接头圆规
double-head flat scraper双头平刮刀
double double radio source双双射电源
double layer metallization两层金属化
double-side carbon paper双面复写纸
double-check snow plough双侧板式雪犁
double-barrier potential双势垒
double beam interferometer双光束干涉仪
double-ended cooperation双端协作